The Ridart 190 vent cap is used on vapor recovery lines to allow air entry into the tank and help regulate tank atmosphere. An internal screen protects the line from dirt, insects, and other particles that could block the vent. It is not a safety device and should be combined with an appropriate end‑of‑line deflagration flame arrester when used with flammable liquids.
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The Ridart 197 is a pressure vacuum valve designed for Stage I vapor recovery systems on underground storage tanks. It regulates tank pressure to protect against overpressure while reducing fuel evaporation and environmental pollution. Constructed from aluminium with Viton® seals and brass poppets, it complies with ATEX Directive 2014/34/EU.
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The Ridart 197 EN‑P is a pressure vacuum valve combined with an end‑of‑line deflagration flame arrester, designed to regulate tank pressure, reduce evaporation, and protect against external fires. It is ATEX‑certified to EN ISO 16852:2016 for use in Stage I vapor recovery systems on hydrocarbon and chemical storage tanks.
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Ridart 197 EN-P VENT is an end-of-line deflagration flame arrester vent for Stage I vapor recovery systems on storage tanks. It combines a pressure vent function with a stainless steel ribbon coil flame arrester to stop flame transmission from outside while allowing vapors to be safely vented. Aluminium, PTFE-coated, and stainless steel versions cover a wide range of fuels and chemicals.
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Ridart 21 is a brass check valve designed to prevent backflow in suction lines, allowing flow in only one direction. It features a stainless steel spring, Viton gasket, BSPP ISO 228‑1 threads, and an opening pressure of 30 mbar, making it suitable for traditional fuels without additives.
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The Ridart 330 ENP is an in-line deflagration flame arrester with ribbon coil element, certified to EN ISO 16852:2016 and ATEX Directive 2014/34/EU for hydrocarbon and chemical pipelines. Available in brass (standard) and stainless steel variants for aggressive solvents, acids, or bases, in sizes from 1" to 4" BSPP.
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The Ridart 425 ENP is a flanged in-line deflagration flame arrester with ribbon coil element, certified to EN ISO 16852:2016 and ATEX Directive 2014/34/EU for hydrocarbon and chemical pipelines. Available in aluminium (standard) and PTFE-coated variants for special fuels, solvents, or chemical products, in 2", 3", and 4" pipe sizes.
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Ridart 55 adjustable by-pass valve is designed for use with submersible pumps to reduce pressure and/or flow from the pump to the point of use. Constructed in brass with Viton® seals and a stainless steel spring, it is classified as a safety accessory under Directive 2014/34/EU.
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